The nucleus was discovered by_______in

Options

A. Robert Hooke, 1931
B. Anton van Leeuwenhoek, 1906
C. Robert Brown,1831
D. Schleiden, 1981

Answer

**Step-by-Step Text Solution:**

1. **Understanding the Question**: The question asks for the name of the scientist who discovered the nucleus and the year of the discovery.

2. **Identifying Key Information**: The nucleus is a vital organelle in eukaryotic cells, and its discovery is an important historical milestone in cell biology.

3. **Reviewing Historical Context**:
- Robert Hooke is known for his work with cells and is often credited with the discovery of the cell itself in 1665.
- The nucleus was later described by other scientists, but it is essential to pinpoint the correct individual and year.

4. **Analyzing the Options**:
- **Robert Hooke**: While he discovered cells, he did not specifically discover the nucleus in 1931.
- **Antony Van Leeuwenhoek**: Known for discovering bacteria and protozoa, not the nucleus.
- **Robert Brown**: He discovered the nucleus in 1831, which is the correct answer.
- **Schleiden**: He contributed to cell theory but did not discover the nucleus.

5. **Conclusion**: The nucleus was discovered by Robert Brown in 1831.

**Final Answer**: The nucleus was discovered by Robert Brown in 1831.

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